{? 

/* NO REF, EMPTY */

if [] <> [] then
  Halt(1);
end; 

if [] < [] then
  Halt(1);
end; 

if [] > [] then
  Halt(1);
end; 

if [] <= [] then
else
  Halt(1);
end; 

if [] >= [] then
else
  Halt(1);
end; 

if [] = [] then
else
  Halt(1);
end; 

?}